I was happy to learn that both the old NaruHina combo from Revolution and this newly updated NaruHina combo are possible to have in the game. It all depends on which version of Naruto & Hinata are being used.

Based on tumblr, adventure mode is "let's get Naruto & Hinata together" mode. I haven't really played adventure mode yet--mainly because unlike story mode (which I never care for... the manga is so much better than the video game attempt at "story") you can't replay adventure mode once you finish it (unless they changed that). So, I'm still wandering Konoha and avoiding the main gate (which is where I'm supposed to go so I can go to Suna to give Gaara a letter as that's the first mission :D).